Modelling of magnetic cores for power electronics applications

A Preisach product model, called here modified scalar preisach model (MSPM) is applied to predict the hysteretic behaviour of soft ferrite cores for p ower electronics applications. The paper discuss the main points of the mod el and explains a possible way to identify the modelling parameters by the experimental curves of the major loops and of the virgin material magnetiza tion. In the final part of the paper a series of experimental tests are pre sented, and the capability of the model to predict the power losses and the waveforms of current and voltages in a power electronic system in which is placed a soft ferrite core is shown. (C) 2000 Elsevier Science B.V. All ri ghts reserved.